Removed Form Resubmission callback from CRWWebDelegate.

ios/web/public/web_state/web_state_delegate.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_DELEGATE_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_DELEGATE_H_
 
 #include <set>
 
 #import <Foundation/Foundation.h>
@@ skipping 21 matching lines @@
   // |progress| is a value between 0.0 (nothing loaded) to 1.0 (page fully
   // loaded).
   virtual void LoadProgressChanged(WebState* source, double progress);
 
   // Notifies the delegate that the user triggered the context menu with the
   // given |ContextMenuParams|. Returns true if the context menu operation was
   // handled by the delegate.
   virtual bool HandleContextMenu(WebState* source,
                                  const ContextMenuParams& params);
 
+  // Requests the repost form confirmation dialog. Clients must call |callback|
+  // with true to allow repost and with false to cancel the repost. If this
+  // method is not implemented then WebState will repost the form.
+  virtual void ShowRepostFormWarningDialog(

[marq (ping after 24h), 2017/01/24 14:46:46]

Naming consistency: Should this be OnFormRepostWarning() to match
OnAuthRequired()?

[Eugene But (OOO till 7-30), 2017/01/24 21:33:11]

ShowRepostFormWarningDialog name matches //content. I think //ios/web should be
consistent with //content, so people who know //content API can understand how
//ios/web works and vice versa.

+      WebState* source,
+      const base::Callback<void(bool)>& callback);
+
   // Returns a pointer to a service to manage dialogs. May return nullptr in
   // which case dialogs aren't shown.
   // TODO(crbug.com/622084): Find better place for this method.
   virtual JavaScriptDialogPresenter* GetJavaScriptDialogPresenter(
       WebState* source);
 
   // Called when a request receives an authentication challenge specified by
   // |protection_space|, and is unable to respond using cached credentials.
   // Clients must call |callback| even if they want to cancel authentication
   // (in which case |username| or |password| should be nil).
@@ skipping 16 matching lines @@
   // Called when |this| is no longer the WebStateDelegate for |source|.
   void Detach(WebState* source);
 
   // The WebStates for which |this| is currently a delegate.
   std::set<WebState*> attached_states_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_DELEGATE_H_